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2,346 Articles
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The world's best gem articles, published weekly.

Most Recent Articles

pastel purple sapphire - classic engagement ring stones
Classic Engagement Ring Stones

Emerald, ruby, sapphire, and diamond are the most popular choices for classic engagement ring stones. Learn more about these traditional favorites.

old mine cut - five-carat diamond ring
Five-Carat Diamond Ring: an Insider’s Guide

Choosing a five-carat diamond isn’t as simple as finding a diamond in a smaller size. Read our insider tips to find the right rock for your engagement ring.

Table polished, pit free - heart ruby
How to Cut a Simple Heart Ruby or Sapphire

Cutting corundum gems — rubies and sapphires — can be difficult. Learn how to handle this material by faceting a simple heart ruby from lab-created rough.

demantoid garnet - cushion cut, Madagascar
Demantoid Garnet Value, Price, and Jewelry Information

One of the rarest garnet varieties, demantoid can have a green color that rivals emerald and a fire that exceeds diamond. Demantoids are highly prized by both gem collectors and jewelry enthusiasts.

engagement ring setting - twisted pave shank with sunburst halo
Engagement Ring Setting: Your Most Important Decision

Choosing a setting is the most important decision when shopping for a ring. Read about your options in this comprehensive guide to engagement ring settings.

spinel, Sri Lanka - gemology career options
Gemology Career Options

Thinking of becoming a gemologist? Consider these gemology career options, compare their estimated salaries, and decide which one may be right for you.

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"Becoming a Pro Member of IGS just made good sense for my business. The gemology resources are fantastic, and my profile lets potential customers know I am serious about colored gemstones. And frankly, if I get any exposure to potential customers it's a no-brainer."
Paul Bierker, Paul Michael Designs
Jeweler, IGS Pro Member

The world's best online resource for gemstone appraisal

Over 15 years, we have assembled detailed pricing and value information for appraising over 70 different gemstones. The values in our guide come from a variety of sources including primary and secondary gemstone dealers, jewelers, miners, and wholesale suppliers of commonly traded gemstones.

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